18650 Lithium Ion Battery 1S3P 3.7V 7500mAh Li-Ion Battery Packs Pass UL2054 Certificate
18650 Lithium Ion Battery 1S3P 3.7V 7500mAh Li-Ion Battery Packs Pass UL2054 certificate.
Advantage:
1. ICR18650 1S3P 3.7V 7.5AH pass UL2054 certificate.
2. Be widely used in light/lamp
3. The cell pass UL1642,CB,IEC62133,ROHS,REACH,2023/1542 certificate.
Cell electrical characteristics:
| No. |
Items |
Test Method and Condition |
Criteria |
| 1 |
Thermal exposure test |
Each fully charged cell, stabilized at room temperature, is placed in a circulating air-convection oven. The oven temperature is raised at a rate of 5 °C/min ± 2 °C/min to a temperature of 130 °C ± 2 °C. The cell remains at this temperature for 10 min before the test is discontinued. |
No fire, No explosion |
| 2 |
Low pressure |
Each fully charged cell is placed in a vacuum chamber, in an ambient temperature of 20~25℃. Once the chamber has been sealed, its internal pressure is gradually reduced to a pressure equal to or less than 11.6 kPa (this simulates an altitude of 15240 m) held at that value for 6 h. |
No leakage, No fire, No explosion |
| 3. |
Short test |
The fully charged battery is to be short-circuited by connecting the positive and negative terminals of the battery with resistance load not exceed 100mΩ. Tests are to be conducted at room temperature 20~25℃. |
No fire, No explosion The Temperature of the Battery surface not exceeded than 150℃ |
| 4 |
Forced discharge test |
A discharged cell is subjected to a reverse charge at 1C for 90 min. |
No fire, No explosion |
| 5 |
Over charge test |
After standard charge, continue to charge with a constant voltage 4.6V per a cell, holding 8h. |
No leakage, No fire, No explosion |
| 6 |
Soak Test |
Put the batteries into clean water, be soaked for 24 hours. |
No break, No fire |
| No. | Items | Specifications |
Remark |
|
1 |
Capacity for assembled cell discharging by 0.2C |
≥7330mAh |
Standard discharging method |
|
2 |
Battery Voltage |
3.7V~3.9V
|
Delivery voltage, Within 10 days from Factory |
|
3 |
Standard charge condition
|
Charge with 0.2C constant current and 4.2Vconstant voltage, charge to 4.2V,continue charging till current declineto ≤0.01C |
Charge voltage:4.2V±0.02V Charge current:0.2C |
|
4 |
Maximum charge current |
4A
|
For continuous charging mod |
|
5 |
Maximum discharge current |
4A
|
For continuous discharge mod |
|
6 |
Standard discharging method |
0.2C constant current discharge to 3.0V, |
|
|
7 |
Internal Impedance |
Assemblage Impedance≤160mΩ |
Measure two sides of the drawing line after assembling. |
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